What is the horsepower rating for this rotating assembly?

With the standard 7/16-inch ARP 8740 cap screws, this assembly is rated for up to 900 horsepower. If you opt for the ARP 2000 cap screws, the rating increases to 1,500 horsepower.

What materials are used in this Manley rotating assembly?

The crankshaft and connecting rods are made from 4340 forged steel. The pistons are constructed from 2618 forged aluminum, and premium chrome moly wrist pins are included.

Is this rotating assembly approved for use in California?

No, this part is not CARB approved and cannot be shipped to California due to emissions regulations.

Specifications

Brand: Manley Performance
Part #: 29598H
UPC: 807298080444

Manley Rotating Assembly, BBC 582 4.375 STROKE/4.600/+43cc

Name: Manley Rotating Assembly, BBC 582 4.375 STROKE/4.600/+43cc
Brand: Manley Performance
SKU: manley-performance-manley-rotating-assembly-bbc-582-4-375-stroke-4-600-43cc-t14-880959
Price: 4152.46 USD
Availability: BackOrder

$4152.46

On Backorder

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Manley Rotating Assembly, BBC 582 4.375 STROKE/4.600/+43cc. Built with forged steel and aluminum for high-horsepower builds.

Key Features

Fits BBC (Big Block Chevrolet) engines.
Features a 4340 forged steel crankshaft with a 4.375-inch stroke.
Includes 4340 forged steel H-beam connecting rods with 7/16-inch ARP 8740 cap screws.
Optional ARP 2000 cap screws are available for increased horsepower support.
2618 forged aluminum Platinum Series pistons are included.
Comes with premium chrome moly wrist pins.

This rotating assembly is designed for BBC (Big Block Chevrolet) engines. Check manufacturer specifications to confirm compatibility with your specific engine build.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

Starting with a 4340 forged steel crankshaft, this Manley rotating assembly is built for serious performance. It's designed for BBC (Big Block Chevrolet) engines and features a 4.375-inch stroke with a 4.600-inch bore and +43cc piston volume. This combination creates a 582 cubic inch displacement, making it a substantial upgrade for power-hungry applications.

The connecting rods are also made from 4340 forged steel, featuring an H-beam design. They come equipped with 7/16-inch ARP 8740 cap screws, which are rated for up to 900 horsepower. If your build demands more, you can opt for ARP 2000 cap screws, pushing the assembly's capability to an impressive 1,500 horsepower. The pistons are crafted from 2618 forged aluminum, part of Manley's Platinum Series, and include premium chrome moly wrist pins for durability under extreme stress.

This assembly is a well-built foundation for a high-performance engine. Keep in mind that this part is not CARB approved and cannot be shipped to California. Always refer to manufacturer documentation for complete installation details and recommended pairings.